Funding for this research was provided by:
University of Gothenburg
Received: 31 January 2022
Accepted: 12 May 2022
First Online: 17 May 2022
: The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Regional Ethics Committee in Gothenburg and the Swedish Ethical Review Authority (protocol code 897–11 in 2011–11-10, T439-13 in 2013–06-10, T085-14 in 2014–03-07, 2019–05219 in 2019–11-21 and 2020–02-07). Informed consent was obtained from all subjects involved in the study.
: Not applicable.
: The authors declare that they have no competing interests.